MDT to R Converter
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Add one or more places to compare local times, adjust the date, and share the result.
Quick answers
Selected conversion
6:00 am06:00 MDT (UTC-6), Oct 25, 2026 = 7:00 am07:00 R (UTC-5), Oct 25, 2026
MDT is 1 hour behind R.
MDT and R examples
These examples always use MDT (UTC-6) and R (UTC-5). They stay the same when you change the date or time above. The selected conversion may differ when daylight saving time applies.
MDT is 1 hour behind R.
How the time difference changes
For most of the year, MDT is 1 hour behind R. From Nov 1, 2026 to Mar 14, 2027, MST is 2 hours behind R.
For most of the year, working hours of 9:00 am to 6:00 pm in MDT correspond to 10:00 am to 7:00 pm in R. At other times of the year, working hours of 9:00 am to 6:00 pm in MST correspond to 11:00 am to 8:00 pm in R.For most of the year, working hours of 09:00 to 18:00 in MDT correspond to 10:00 to 19:00 in R. At other times of the year, working hours of 09:00 to 18:00 in MST correspond to 11:00 to 20:00 in R.
Compare MDT time with R time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.
Time Difference
Mountain Daylight Time is 1 hour behind Romeo Time Zone.
6:00 am06:00 in MDT is 7:00 am07:00 in R
MDT to R call time
Best time for a conference call or a meeting is between 9am-5pm09:00-17:00 in MDT which corresponds to 10am-6pm10:00-18:00 in R
6:00 am06:00 Mountain Daylight Time (MDT). Offset UTC -6:00 hours
7:00 am07:00 Romeo Time Zone (R). Offset UTC -5:00 hours
6:00 am06:00 MDT / 7:00 am07:00 R
Choose an hour to update the converter. Day labels such as “next day” or “+1” are relative to the selected date in the first column. Use Up and Down arrow keys, Home or End to move between hours, then Enter or Space to select.
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Mountain Daylight Time
Offset: MDT is 6 hours behind Greenwich Mean Time (GMT).
Countries using this time zone: Canada, Mexico, United States
Principal Cities: The largest city in the MDT time zone is Ciudad Juárez in Mexico, with about 1.512 million people. Other major cities in this time zone include Denver, El Paso, Albuquerque, Colorado Springs.
French: HAR - Heure Avancée des Rocheuses
Spanish: MT - Zona Pacífico
Today all shaded areas are on MDT.
Daylight Saving: Mountain Daylight Time (MDT) is a daylight saving/summer time zone. During winter, some places set clocks back one hour and observe Mountain Standard Time (MST).
Start: Mountain Daylight Time (MDT) started on Sunday, March 8, 2026 at 2:00 am02:00 local time and clocks were set one hour forward to Sunday, March 8, 2026, 3:00 am03:00. Daylight saving starts annually on the second Sunday of March.
End: Mountain Daylight Time (MDT) ends on Sunday, November 1, 2026 at 2:00 am02:00 local time and clocks are set one hour back to Sunday, November 1, 2026, 1:00 am01:00 local standard time instead. Daylight saving ends annually on the first Sunday of November.
See USA daylight saving time and upcoming clock changes worldwide.
MDT representations, usage and related time zones
- -06 - basic short
- -0600 - basic
- -06:00 - extended
- -0600 - sign character (-) followed by a four digit time providing hours (06) and minutes (00) of the offset. Indicates an offset of six hours to the west of the zero meridian.
- Sierra - Military abbreviation for MDT
- S - short form of 'Sierra'
- America/Boise
- America/Cambridge_Bay
- America/Ciudad_Juarez
- America/Denver
- America/Edmonton
- America/Inuvik
- America/Shiprock
- America/Yellowknife
- Canada/Mountain
- MST7MDT
- Navajo
- US/Mountain
- CST - Central Standard Time
- CT - Central Time
- MDT - Mountain Daylight Time
- EAST - Easter Island Standard Time
- GALT - Galapagos Time
- S - Sierra Time Zone
Romeo Time Zone
Offset: R is 5 hours behind Greenwich Mean Time (GMT).
Countries using this time zone: Bahamas, Brazil, Canada, Cayman Islands, Chile, Colombia, Cuba, Ecuador, Haiti, Jamaica, Mexico, Panama, Peru, Turks and Caicos Islands, United States
Principal Cities: The largest city in the R time zone is New York City in the United States, with about 8.804 million people. Other major cities in this time zone include Lima, Bogotá, Toronto, Quito.
Daylight Saving: Some places on Romeo Time Zone (R) keep the same time all year, while others use R for only part of the year and change their clocks for daylight saving time; see upcoming clock changes worldwide.
Today some of the lighter areas are on UTC−4 (Cuba Daylight Time, EDT).
R representations, usage and related time zones
- -05 - basic short
- -0500 - basic
- -05:00 - extended
- -0500 - sign character (-) followed by a four digit time providing hours (05) and minutes (00) of the offset. Indicates an offset of five hours to the west of the zero meridian.
- Romeo - Military abbreviation for R
- R - short form of 'Romeo'
- CDT - Central Daylight Time
- EST - Eastern Standard Time
- ET - Eastern Time
- COT - Colombia Time
- CST - Cuba Standard Time
- EASST - Easter Island Summer Time
- ECT - Ecuador Time
- PET - Peru Time
- R - Romeo Time Zone